Datadog plunges 14.4% after cautious Q4 revenue outlook despite Q3 beat

What happened

Datadog (DDOG) fell 14.4% on November 4, 2026, after its earnings release and a cautious fourth-quarter revenue outlook tied to lower usage from its largest AI customer. The stock opened 9.4% below the prior close and finished the session at $188.72. Trading volume ran 4.0 times its 20-day average as investors parsed a strong quarter and a muted near-term guide.

How big was the move

The session’s move was outsized: it was 3.3 times a typical daily move for the stock. Over the last five sessions the share price fell 32.2%, even as the stock had risen 16.4% over one year. The market value stood at $84.48 billion, and the S&P 500 fell 0.7% over five sessions, underscoring that Datadog’s decline reflected company-specific news rather than broad market weakness. The stock’s beta of 1.41 indicates it tends to move more than the market.

The technical picture

The stock closed 27.5% below its 20-day moving average and 24.5% below its 50-day moving average, while it sat 5.5% below its 200-day average. The 50-day average remains above the 200-day average, a sign the longer-term uptrend has been challenged by recent weakness. The Relative Strength Index (14 days) was 29, below 30, a level often called oversold, and the shares traded 37.2% below their 52-week high. Volatility has been elevated, running 70% annualized over 60 days, which is higher than 78% of its own readings over five years.

Fundamentals and valuation

For the four quarters through September 30, 2026, revenue was $4.28 billion, up 33.2% from a year earlier. Diluted earnings per share for that period were $0.72, which rose 140.9% year-over-year, and gross margin was 79.6%, nearly unchanged from a year earlier. Operating margin improved to 2.2% from 1.3% a year earlier, and free-cash-flow margin was 27.4%. The company reported net debt of 1.1 times EBITDA and its share count increased by 3.6% over the year. On valuation, the stock traded at 262.1 times trailing earnings and 74.4 times price to forward earnings, with a free-cash-flow yield of 1.4%.

Those metrics show a mix of strengths and limits for investors. Revenue and profit margins are expanding, and free-cash-flow margin is strong, but the stock’s price-to-earnings multiples remain high relative to history; its valuation is lower than 64% of its own readings over the past five years, with a five-year median of 393.3 times earnings.

Earnings and analyst expectations

Datadog reported on November 4, 2026, with earnings per share of $0.81 versus $0.65 expected, a beat of 24.2% and the fifteenth consecutive quarter of beating estimates. The company said demand was broad across customers, highlighted growth from AI-related workloads and noted its infrastructure monitoring ARR exceeded $2 billion. It also launched Scout 1.0 to power a new Bits Investigation capability. Management raised its full-year outlook for the third consecutive quarter, but said fourth-quarter revenue was expected to be roughly flat with Q3 because lower usage from its largest AI customer was weighing on growth. Those comments coincided with the stock’s sharp drop.

Forty-eight analysts cover the name and the consensus rating is Buy; 85% rate the stock Buy or Strong Buy. The consensus price target is $291.27, which is 54.3% above the closing price. Historically the stock’s typical two-day reaction after recent reports was a rise of 3.3%, and the company’s average surprise over the last four reports was 15.0% above estimates.

PromtFinance scores paint a mixed picture: Growth scored 91, Revisions 97 and Quality 76, while Value scored 29 and Stability 50. Those readings highlight rapid growth and positive revisions, set against stretched valuation measures.

What to watch

• November 5, 2026: next report date listed as the company’s next report.
• Management’s comments on fourth-quarter revenue and the pace of usage from its largest AI customer, cited as weighing on growth in the November 4 release.
• Guidance updates tied to AI-related workloads and adoption, following the launch of Scout 1.0 and the company’s statement that infrastructure monitoring ARR exceeded $2 billion.
• Volume and price action relative to 20-day and 50-day averages after the earnings reaction; the session traded 4.0 times its 20-day average.
• Analyst revisions and the consensus price target of $291.27 versus the closing price of $188.72.